| Abbreviation | Definition |
|---|---|
| TST | Transition Support Team |
| TST | Transport Service Tilburg |
| TSTI | Tatung Science and Technology, Inc. |
| TSTRANSCO | Transmission Corporation of Telangana Limited |
| TSV | Tri-State Velo |
| TSW | The Silent Workhorse |
| TSWH | The Silent Workhorse |
| TSZ | The Sims Zone |
| TSZ | The Squeaky Zone |
| TT | Tarlington Training |
| TT | Tension Technology |
| TT | Trusted Team |
| TTB | Things That Break |
| TTBA | Twin Towers Business Association |
| TTC | Tarheel Trading Company |
| TTC | Technology Training Center |
| TTC | Technology Transition Corporation |
| TTC | The Toro Company |
| TTC | The Travel Corporation |
| TTC | The Ttc Corporation |